EP 1788283 A2 20070523 - Timing belt tensioner with stops controlled by frictional brake
Title (en)
Timing belt tensioner with stops controlled by frictional brake
Title (de)
Zahnriemenspanner mit reibungsgesteuerten Wegbegrenzern
Title (fr)
Tendeur de courroie crantée avec des butées commandées par frein à friction
Publication
Application
Priority
- EP 02782567 A 20021203
- US 33580101 P 20011205
Abstract (en)
A tensioner (10) features a backstop device (40) which allows free rotation of the pivot arm (20) in one direction but not the other. Reverse rotation is prevented by friction that is able to resist torque on the pivot arm (20) under ordinary operating conditions which otherwise could permit belt tooth-skip to occur. In disclosed embodiments, the backstop device (40) includes a stop sleeve (50) and a clamp holder (60) which are axially interlocked and are able to rotate relative to each other. A clutch spring (80) surrounds permits relative rotation between the stop sleeve and the clamp holder in one direction but not the other. A clamp (70) retained within the clamp holder (60) frictionally engages the pivot shaft. A viscous coupling may be used in place of the frictional clamp.
IPC 8 full level
F16H 7/12 (2006.01); F16D 41/20 (2006.01); F16H 7/08 (2006.01)
CPC (source: EP KR US)
F16D 41/20 (2013.01 - KR); F16D 41/206 (2013.01 - EP US); F16H 7/12 (2013.01 - KR); F16H 7/1218 (2013.01 - EP US); F16H 7/129 (2013.01 - EP US); F16H 7/0831 (2013.01 - EP US); F16H 7/0834 (2013.01 - EP US); F16H 2007/081 (2013.01 - EP US); F16H 2007/084 (2013.01 - EP US)
Citation (applicant)
- US 4473362 A 19840925 - THOMEY HENRY W [CA], et al
- US 4145934 A 19790327 - SRAGAL RICHARD F
- US 4351636 A 19820928 - HAGER CLARENCE H
- US 4634407 A 19870106 - HOLTZ GLEN D [US]
- US 4583962 A 19860422 - BYTZEK KLAUS K [CA], et al
- US 4822322 A 19890418 - MARTIN KELLY D [US]
- US 4834694 A 19890530 - MARTIN KELLY D [US]
- US 4808148 A 19890228 - HOLTZ GLEN D [US]
- US 4923435 A 19900508 - KADOTA YASUSHI [JP], et al
- US 54710800 A 20000411
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 03048606 A1 20030612; AU 2002347150 A1 20030617; BR 0214737 A 20040914; BR 0214737 B1 20110222; CA 2469497 A1 20030612; CA 2469497 C 20100720; CN 100439758 C 20081203; CN 1599847 A 20050323; DE 60225716 D1 20080430; DE 60225716 T2 20090430; EP 1451486 A1 20040901; EP 1451486 B1 20080319; EP 1788283 A2 20070523; EP 1788283 A3 20090902; EP 1788283 B1 20120118; JP 2005511984 A 20050428; JP 4508641 B2 20100721; KR 100933816 B1 20091224; KR 20050044684 A 20050512; US 2006035740 A1 20060216; US 2009176609 A1 20090709; US 7507172 B2 20090324; US 8267819 B2 20120918
DOCDB simple family (application)
CA 0201854 W 20021203; AU 2002347150 A 20021203; BR 0214737 A 20021203; CA 2469497 A 20021203; CN 02824421 A 20021203; DE 60225716 T 20021203; EP 02782567 A 20021203; EP 07004611 A 20021203; JP 2003549763 A 20021203; KR 20047008564 A 20021203; US 34979609 A 20090107; US 49795804 A 20040607